223010123231221 has 4 divisors (see below), whose sum is σ = 236128365774252. Its totient is φ = 209891880688192.

The previous prime is 223010123231089. The next prime is 223010123231239. The reversal of 223010123231221 is 122132321010322.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 78201655648900 + 144808467582321 = 8843170^2 + 12033639^2 .

It is a cyclic number.

It is not a de Polignac number, because 223010123231221 - 2¹³ = 223010123223029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223010123231321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6559121271490 + ... + 6559121271523.

It is an arithmetic number, because the mean of its divisors is an integer number (59032091443563).

Almost surely, 2^{223010123231221} is an apocalyptic number.

It is an amenable number.

223010123231221 is a deficient number, since it is larger than the sum of its proper divisors (13118242543031).

223010123231221 is a wasteful number, since it uses less digits than its factorization.

223010123231221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13118242543030.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 223010123231221 its reverse (122132321010322), we get a palindrome (345142444241543).

The spelling of 223010123231221 in words is "two hundred twenty-three trillion, ten billion, one hundred twenty-three million, two hundred thirty-one thousand, two hundred twenty-one".